A ring in my rendering

leo04

I am suddenly seeing a ring in my renders, (See image)

Any idea what is causing it and how to remove it?

The second image is the Render settings.

Thanks

leo04

I have figured out what this is. The ring in my render was caused by a prop. See the images attached.

I was able to determine this using the render setting "White Mode". This is what produced the second and third images and allowed me to see what was causing my issue.

Thanks to all of you that reviewed my issue.

I hope this post helps others with a similar problem..